Wavedistortion will occur when finite amplitude ultrasonic waves propagate in elastic solids, resulting in the production of higher order harmonics.
有限振幅的超声波在固体中传播时会发生波形畸变，伴随着高次谐波的出现。
2
To verify the accuracy and efficiency of this method, the distortion of the wave propagation on two typical mild slopes are simulated numerically.
为了验证方法的精度和效率问题，对两种典型缓坡地形上的波浪传播变形进行了数值模拟。
3
The method of analysis frequency table is using the meter of frequency table to test all kinds of frequency and then calculate the distortion of the wave.